BANGALORE: While it took Google over a year to build its augmented-reality goggles, Google Glass, Kochi-based Arvind Sanjeev says he was able to replicate it in less than a month for just Rs 4,500, thanks to open-source hardware.

Instead of commercializing the product and with the intention of contributing to the community, Sanjeev posted a blog explaining how his 'Smart Cap' can be built by anyone using opensource hardware such as a Rasberry Pi computer, an Arduino board and Androi ..